Yaskawa CIMR-P7U4160 Inverter

(Varispeed P7 Inverter Specialized for Fans & Pumps)

1. Model Code Breakdown

CIMR-P7U4160 (Full name on nameplate: CIMR-P7U41600 PDF)

CIMR: Universal prefix for Yaskawa inverters

P7: P7 series, energy-saving V/F inverter dedicated to fans and pumps

U: 400V three-phase high-voltage model (380~480V)

4160: Power rating code, corresponding to 250HP / 160kW class

2. Core Electrical Rated Specifications

2.1 Main Circuit Power Ratings

2.2 Allowable Power Supply Fluctuation

Voltage: +10% / -15%

Frequency: ±5%

2.3 Control Performance

Speed Adjustment Range: 40:1 (V/F control)

Speed Control Accuracy: ±2%~±3%

Control Modes: Standard V/F, Energy-saving Square V/F (for fans & pumps), Multi-point V/F curve

3. Mechanical & Environmental Specifications
4. Enclosure Rating: NEMA1 wall-mounted closed cabinet
5. Overall Weight: Approx. 170kg
6. Operating Ambient Temperature: 0℃ ~ +40℃ (derating required above 40℃)
7. Humidity: ≤80%RH, no condensation
8. Altitude: No derating below 1000m; derate 1% per additional 100m above 1000m
9. Cooling Method: Built-in high-power cooling fan (individually replaceable)
10. Braking Mode: Built-in DC dynamic braking; external braking unit/resistor required for high-power regenerative energy
11. Hardware Interface Configuration

4.1 Main Circuit Terminals (R/S/T Input; U/V/W Motor Terminals; +/Braking Unit; PE Earth)

R, S, T: 3-phase 380~480V power input

U, V, W: Connection to 3-phase induction motor

+, -: External braking resistor / regenerative unit connection

PE: Protective earth (common ground for cabinet and main circuit)

4.2 Standard Control Circuit Configuration

Digital Inputs: 8 channels, switchable between NPN and PNP

Digital Relay Outputs: 2 normally open contacts (fault signal, run status signal)

Analog Inputs: 2 channels (0~10V / 4~20mA frequency reference)

Analog Outputs: 2 channels (monitor frequency, current, voltage)

Communication: Standard Modbus-RTU; optional Profibus & DeviceNet communication cards

Digital Operator: 5-line 16-character LCD, supports parameter upload, download and copy

5. Typical Application Scenarios

The P7 series is designed specifically for square-torque loads. The high-power CIMR-P7U4160 model applies to:

1. Large cooling water circulation pumps, municipal water supply booster pumps
2. Factory centrifugal fans, boiler induced draft fans, main dust removal fans
3. Central air-conditioning chiller units, large cooling tower water pumps
4. Mining & metallurgy dust exhaust fans, wastewater treatment aeration pumps

Advantages: Built-in energy-saving square torque curve, sleep function, multi-pump rotation switching, constant pressure PID control

6. Discontinued Replacement Solution (P7 series fully discontinued)

Direct Drop-in Upgrade: Yaskawa P1000 Series

Equivalent replacement model: CIMR-PU4A0415ABA

1. Fully matched power rating: 304A output, compatible with 160kW motors
2. Full function coverage: Retains all fan & pump dedicated functions of P7 (multi-pump control, PID, sleep mode)
3. Highly compatible communication protocols, terminal logic and parameter sets, low renovation workload
4. Merits: Higher energy efficiency, built-in EMC filter, enhanced fault diagnosis, abundant spare parts

Alternative General Heavy-Duty Option: A1000 Series

(Vector type, selected for heavy-duty or closed-loop control demands)

7. Common Fault Codes & Troubleshooting Matrix (Universal for P7 Series)

8. Strict Wiring & Installation Prohibitions
9. Main power cables and control signal wires must be routed in separate cable trays with a minimum spacing of 30cm; long parallel laying is forbidden.
10. Shielded motor cables are recommended; shield shall be grounded only at the control cabinet end.
11. Main circuit copper busbars of high-power models shall be tinned and tightened with specified torque to avoid overheating and arcing.
12. For multi-pump linked systems, AC contactors shall not be installed on the inverter output side for frequent switching.
13. For sites with heavy dust and moisture, clean air duct filters regularly to prevent overheat alarms.
14. If long motor cables (>50m) are required, an output du/dt filter must be installed to suppress peak voltage and protect motor insulation.
15. Key Basic Commissioning Parameters (Standard for Fan & Pump Applications)
16. E1-06 Base Frequency: Rated 50/60Hz as marked on motor nameplate
17. E1-13 Square V/F (Fan Energy Saving): Set to 2 to enable square torque curve
18. b5 PID Pressure Closed-Loop: Set target pressure and P/I/D gains
19. b5-17 Sleep Function: Low-frequency energy-saving sleep, auto-stop during idle periods
20. C1-01~C1-04 Accel & Decel Time: ≥15s recommended for pumps, ≥30s for fans to avoid overcurrent
21. E2-01 Motor Rated Current: Enter value per motor nameplate, baseline for overload protection

Complete Model List of Yaskawa Varispeed P7 Series (CIMR-P7U□4□□□) 400V Series

Notes

1. Series Naming Rule: `CIMR-P7U4XXX0`. The full code printed on the nameplate ends with digit 0, which is omitted as the short model number for selection (e.g., CIMR-P7U4160).
2. U = Dedicated 3-phase 380~480V model for fans and pumps; ND Normal Duty (square-torque loads for fans & pumps).
3. Power correspondence unit: kW / HP / Rated Output Current (A).
4. The entire series adopts V/F control, built-in square torque curve and PID multi-pump control. This series has been fully discontinued, with replacement models CIMR-PU4A□□□□ (P1000 series).
5. Low & Medium Power Range (7.5kW ~ 132kW)

1. High Power Range (160kW ~ 400kW, including CIMR-P7U4160 you inquired)

Supplementary Key Remarks

1. 200V single/3-phase P7 models (P7E / P72 series) are excluded from the above table. This list only covers mainstream industrial 400V 3-phase fan & pump models P7U.
2. Model Abbreviation Rule: The trailing digit 0 is often omitted in engineering drawings and procurement documents. For example, CIMR-P7U41600 is abbreviated as CIMR-P7U4160.
3. Cabinet Classification: Models ≤132kW adopt standard wall-mounted cabinets; models ≥160kW (4160 and above) are large floor-standing cabinets equipped with independent high-power cooling fans.
4. Distinction of output versions at the same power rating:

Standard built-in braking transistor; high-power models 4160 and above require an external braking unit + braking resistor to implement dynamic braking during deceleration.

5. Discontinued Model Replacement Mapping (P7U4XXXX → P1000 PU4AXXXX)

CIMR-P7U41600 (160kW) → CIMR-PU4A0415ABA

CIMR-P7U42000 (200kW) → CIMR-PU4A0475ABA

CIMR-P7U42500 (250kW) → CIMR-PU4A0605ABA